MCQOPTIONS
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MCQOPTIONS
This section includes 532 Mcqs, each offering curated multiple-choice questions to sharpen your Grade8 knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
The transformed rocks are called |
| A. | sedimentary rocks |
| B. | metamorphic rocks |
| C. | igneous rocks |
| D. | morphic rocks |
| Answer» C. igneous rocks | |
| 502. |
Molten rock inside Earth's crust is called |
| A. | lava |
| B. | magma |
| C. | volcano |
| D. | molten rock |
| Answer» C. volcano | |
| 503. |
Planting more trees to get back forest is |
| A. | forestation |
| B. | deforestation |
| C. | reforestation |
| D. | pollution |
| Answer» D. pollution | |
| 504. |
Pollutants in air are strong enough to turn rain water in to |
| A. | chemical |
| B. | acid rain |
| C. | pure water |
| D. | water droplets |
| Answer» C. pure water | |
| 505. |
Reduce, reuse and recycle can conserve our |
| A. | environment |
| B. | food |
| C. | climate |
| D. | oxygen |
| Answer» B. food | |
| 506. |
Agricultural crops originate from wild species of plants in rainforests includes |
| A. | coffee beans |
| B. | rice |
| C. | both a and b |
| D. | tea |
| Answer» D. tea | |
| 507. |
In china animal which is kept in reserve to save from being extinct is |
| A. | panda |
| B. | ostrich |
| C. | peacock |
| D. | dodo |
| Answer» B. ostrich | |
| 508. |
In laboratory the thermometer which is used to measure temperatures is |
| A. | ordinary thermometer |
| B. | laboratory thermometer |
| C. | both a and b |
| D. | none |
| Answer» C. both a and b | |
| 509. |
The uneven expansion of bimetallic strip is used in |
| A. | thermostats |
| B. | thermometer |
| C. | barometers |
| D. | spectrometers |
| Answer» B. thermometer | |
| 510. |
When the metal ball loses heat and cools, its volume |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | raised |
| Answer» C. remains same | |
| 511. |
Ice cubes melt at room temperature due to heat |
| A. | gain |
| B. | loss |
| C. | increased |
| D. | constant |
| Answer» B. loss | |
| 512. |
In appliances like electric irons, heaters, air-conditioners and refrigerators the temperatures are kept constant by |
| A. | stabilizer |
| B. | extension |
| C. | thermostat |
| D. | thermometer |
| Answer» D. thermometer | |
| 513. |
A rock which attracted iron materials was found by |
| A. | Greeks |
| B. | Trojans |
| C. | Egyptians |
| D. | Italians |
| Answer» B. Trojans | |
| 514. |
A substance consisting of a coil of wire with an iron core and is only magnetized when an electric current flows through it is called |
| A. | magnet |
| B. | electromagnet |
| C. | battery |
| D. | coil |
| Answer» C. battery | |
| 515. |
Natural magnet is also called as |
| A. | magnet |
| B. | magnetite |
| C. | magnesia |
| D. | Lodestone |
| Answer» E. | |
| 516. |
Electromagnets are used in |
| A. | loud speakers |
| B. | door bells |
| C. | both a and b |
| D. | cabinet door |
| Answer» D. cabinet door | |
| 517. |
The force which a magnet exerts is called |
| A. | magnetic force |
| B. | magnetic field |
| C. | magnetic circle |
| D. | magnetic energy |
| Answer» B. magnetic field | |
| 518. |
A poisonous fish which has a speckled and lumpy body which blends itself in with stones on seabed is |
| A. | star fish |
| B. | stone fish |
| C. | koi fish |
| D. | gold fish |
| Answer» C. koi fish | |
| 519. |
Organism which live in hydrothermal vents in Pacific ocean includes |
| A. | Pompeii worms |
| B. | earthworms |
| C. | centipede |
| D. | millipede |
| Answer» B. earthworms | |
| 520. |
A system formation when different communities interact with each other and their a biotic environment is called an |
| A. | ecosystem |
| B. | solar system |
| C. | organism system |
| D. | complex system |
| Answer» B. solar system | |
| 521. |
The animals which hunt down other animals are called |
| A. | predator |
| B. | prey |
| C. | scavenger |
| D. | wild animal |
| Answer» B. prey | |
| 522. |
Birds have adapted behavior to seasonal changes and extreme weather called |
| A. | transpiration |
| B. | shedding of leaves |
| C. | hibernating |
| D. | migration |
| Answer» E. | |
| 523. |
Examples of rocks includes |
| A. | granite |
| B. | marble |
| C. | sandstone |
| D. | all of them |
| Answer» E. | |
| 524. |
A common sedimentary rock which is formed from plant material is |
| A. | coal |
| B. | natural oil |
| C. | diamond |
| D. | marble |
| Answer» B. natural oil | |
| 525. |
Acidic gas which makes air pollutants is |
| A. | carbon dioxide |
| B. | Sulphur dioxide |
| C. | nitrogen |
| D. | oxygen |
| Answer» B. Sulphur dioxide | |
| 526. |
Acid and carbonates react together to form |
| A. | oxygen |
| B. | nitrogen |
| C. | carbon dioxide |
| D. | Sulphur dioxide |
| Answer» D. Sulphur dioxide | |
| 527. |
Sediments are the particles of |
| A. | clay and sand |
| B. | minerals |
| C. | rock fragments |
| D. | all of them |
| Answer» E. | |
| 528. |
Sewage water is dropped in ocean after treating in |
| A. | hydro cells |
| B. | sewage treatment |
| C. | turbine |
| D. | filtration |
| Answer» C. turbine | |
| 529. |
Left waste material on land which is washed in to drains by rain is |
| A. | litter |
| B. | oil |
| C. | stones |
| D. | trees |
| Answer» B. oil | |
| 530. |
Aquatic and marine birds get harmed when they come in contact with |
| A. | oil spill |
| B. | salty water |
| C. | big fish |
| D. | boats |
| Answer» B. salty water | |
| 531. |
If ice on mountains will continue to melt the levels in sea will |
| A. | rise |
| B. | lower |
| C. | be same |
| D. | reduce |
| Answer» B. lower | |
| 532. |
Oil spill damage the animal's |
| A. | fur |
| B. | feathers |
| C. | both a and b |
| D. | lungs |
| Answer» D. lungs | |